I don't think it's with the goal of better imaging or soundstage. Having the drivers point towards your ears is better. It's like comparing speakers placed in front of you with speakers placed behind you, the ones properly facing you fun the front are better.

Also he asked about different head shapes and people wanting different angels. Gyrations aren't set to an angle, they have some rotation in the cups that can change delegating on who is wearing them, I'm thinking of the Hifiman Arya design that allows for infinite rotation of the cups. Even the Beyerdynamic DT 770 lineup has some rotation for the earcups.